public IEnumerable <EventHandlerMethod> ResolveEventMethods(Type type)
{
TypeInfo nfo = type.GetTypeInfo();
return(type.GetRuntimeMethods()
.Where(i => !i.IsAbstract && i.IsPublic && !i.IsConstructor && !i.IsStatic &&
MatchesNameConvention(i) &&
HasParameterSignature(i))
.Select(i => EventHandlerMethod.FromMethod(nfo, i)));
}
private async Task SafeInvoke(IEvent @event, EventHandlerMethod method,
object instance)
{
try
{
await Invoker.InvokeAsync(@event, method, instance);
}
catch (Exception err)
{
string msg = $"Error in event handler {err.Message} when handling {@event.GetType().FullName}";
logger.LogError(err, msg);
}
}
internal static async Task SafeInvoke(IEvent @event, EventHandlerMethod method,
object instance)
{
try
{
await Invoker.InvokeAsync(@event, method, instance);
}
catch (Exception err)
{
string msg = $"Error in event handler {err.Message} when handling {@event.GetType().FullName}";
Trace.WriteLine(msg, "BE.CQRS.EventHandler");
}
}
internal Task InvokeAsync(IEvent @event, EventHandlerMethod method,
object instance)
{
object result = method.Method.Invoke(instance, new object[] { @event });
if (!method.Awaitable)
{
return(Task.FromResult(true));
}
if (!(result is Task task))
{
throw new InvalidOperationException("Expected return type of \"Task\"!");
}
return(task);
}
private bool Equals(EventHandlerMethod other)
{
return(Equals(EventTypeInfo, other.EventTypeInfo) && Equals(ParentType, other.ParentType));
}
